Correct me if Im wrong, but it looks theres no amount of marketing that could be put into WRC that would result in more manufacturers, sponsors or fans simply because Rallying is an european sport where the athletes are all grown up adults - due to the natural dangers of the sport - so theres no childish drama and futile gossip on social media around the sport. Its not an american circus, its just a grown up sport not played on a "stadium" (or something like this). Its basically not possible to "grow" a sport like this in modern society.